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Product & Services Safety Self-Powered Temperature Monitoring System

Self-Powered Temperature Monitoring System

Energy-Harvesting PHT Monitoring System




The Energy-Harvesting PHT (Partial Discharge, Humidity, and Temperature) Monitoring System uses energy-harvesting and wireless communication technologies to monitor key electrical and environmental conditions, including temperature, humidity, and partial discharge, across electrical assets such as transformers, cable joints, Ring Main Units (RMUs), Medium-Voltage Air-Insulated Switchgear (MV AIS), and transmission lines.

Sensor data is transmitted wirelessly to a receiver and then delivered to monitoring platforms such as local displays and HMIs, enabling continuous visibility and early detection of abnormal conditions. When measured values exceed predefined thresholds, the system generates an alarm, helping protect critical assets from potential hazards.

By supporting early intervention and condition-based maintenance, the system helps reduce the risk of major equipment failures and improve long-term operational safety.

Overview

  • Self-powered wireless sensors minimize the need for separate power wiring and battery replacement
  • Real-time collection of equipment condition data including temperature, humidity, and partial discharge
  • Centralized monitoring through integration with gateways, HMIs, and upper-level monitoring systems
  • Supports early detection of abnormal temperature rise, predictive maintenance, accident prevention, and reduced maintenance costs

System Overview


Continuous condition monitoring based on wireless and self-powered sensing

Basic Configuration Models

IM-HS-T
Wireless Ultra-Miniature Contact Temperature Sensor
  • Self-powered sensor based on electromagnetic energy
  • Surface temperature measurement: -50℃ ~ +150℃
  • Ultra-compact design with IP68 protection rating
  • Applied to critical heat-generating points such as busbars, circuit breaker contacts, and cable connections
IM-HS-PT
Ultrasonic Partial Discharge (PD) and Temperature Wireless Sensor
  • Simultaneous monitoring of temperature and partial discharge based on self-powered operation
  • Temperature measurement range: -50℃ ~ +125℃
  • Ultrasonic PD detection with built-in AI algorithm
  • Capable of detecting the presence of PD, discharge type, intensity, and occurrence count
IM-BS-HT
Wireless Temperature and Humidity Environmental Sensor
  • Battery-powered wireless environmental sensor
  • Temperature: -40℃ ~ +125℃ / Humidity: 0~100% RH
  • Monitors electrical rooms, inside switchboards, and areas prone to condensation
  • Detects ambient environmental changes and identifies condensation and overheating risks in advance
IM-GW-N3/N9
Wireless Data Receiver
  • Receives 2.4GHz LoRa wireless sensor data
  • Selectable built-in or external antenna type
  • Receives up to 35 sensors
  • Upper-level system integration based on Modbus-RTU
IM-DU-LI100
Panel-Type Receiver and Display Unit
  • Receives 2.4GHz LoRa wireless data and displays in real time
  • Receives up to 12 sensors
  • Supports trend display, alarms, and contact output
  • Integrates with field and upper-level systems via Modbus-RTU communication
IM-DU-LMS / IM-DU-CMS 
Integrated Monitoring Interface
  • Integrated display and centralized management of all sensor data
  • Visualizes temperature, humidity, partial discharge, circuit breaker status, and more
  • Provides alarms, data history, and trend analysis
  • Compatible with upper-level management systems such as Modbus-TCP

Key Benefits

Enhanced Safety

: Continuously monitors critical heat-generating points such as busbars, circuit breaker contacts, and cable connections, and detects abnormal temperature rise, partial discharge, and environmental anomalies early to prevent fires and equipment accidents.

Self-Powered Operation

: Utilizes energy harvesting technologies such as electromagnetic induction, electric field, thermoelectric generation, and solar power to reduce the burden of external power wiring and frequent battery replacement while ensuring long-term operational stability.

Predictive Maintenance

: Accumulates temperature, humidity, and partial discharge data to analyze abnormal equipment patterns and establish maintenance plans before failures occur, minimizing emergency repair situations.

Easy Installation

: Minimizes complex wiring work based on 2.4GHz LoRa wireless communication and can be applied to various equipment including existing switchboards, transformers, transmission lines, and cable connections.

Integrated Monitoring

: Centrally manages data from multiple sensors through IM-GW-N3/N9, IM-DU-LI100, and HMI, and supports rapid on-site response by viewing alarms, trends, and historical data on a single screen.

Reduced Maintenance Cost

: Reduces management burden from manual inspections, wiring maintenance, and battery replacement, and lowers costs from equipment damage and unplanned shutdowns through early response to abnormal conditions.

Operational Continuity

: Monitors equipment status in real time to prevent unplanned shutdowns and accident escalation, supporting stable equipment operation at power plants and industrial facilities.

Scalability & Connectivity

: Integrates with existing systems based on Modbus-RTU, RS-485, and Modbus-TCP, and allows flexible expansion of sensors and gateways according to site scale and equipment configuration.